Mushroom-bullet.



T. C. JOHNSON.

MUSHROOM BULLET. APPLICATION FILED SEPTQIS, 191a.

Patented Jan. 13, 1914.'

COLUMBIA PLANOGRAPH CDWWASHINGTON. b. ca

UNITED STATES PATENT OFFICE- THOMAS C. JOHNSON, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO WINCHESTER REPEATING- ARMS C0,, OF NEW HAVEN, CONNECTICUT, A CORPORATION.

MUSHROOM-BULLET.

Specification of Letters Patent.

Patented J an, 13, 1914.

To all whom it may concern:

Be it known that I, THOMAS C. JOHNSON, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Mushroom- Bullets and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this appli cation, and represent, in

Figure l, a viewin side elevation of a mushroom bulletconstructed in accordance with my invention, a portion of the jacket being broken away, and a portion of the core being shown in section. Figs. 2 and 3, corresponding views of modified forms which the invention may assume.

My invention relates to an improvement in that class of mushroom bullets which have a one-piece jacket and a one-piece core, the object being to provide at a low cost, a bullet of superior performance as a mushroom bullet.

With these ends in view, my invention consists in a bullet having certain details of construction as will be hereinafter described and pointed out in the claim.

In carrying out my invention as shown in Fig. 1, the jacket is virtually divided circumferentially into a tip, 2, and a body, 3, by a circumferential band of elongated cuts or incisions, 4, extending into the core, 5, of the bullet, and arranged at a right angle to the longitudinal axis thereof, whereby the bullet is so weakened in the neighborhood of these cuts that at the time of impact it readily breaks down in their neighborhood and mushrooms. The cuts or incisions are formed after the swaging of the bullet whereby the exuding of the soft core into the cuts is avoided and the cuts left open to provide spaces for the tip to be crushed into on the impact of the bullet.

As shown in Fig. 2, the one-piece jacket of the bullet is virtually divided into a tip, 2, and a body, 3, by a band of four cuts, 6, which are inclined downward toward the base of the bullet and extend through the jacket at an angle thereto and into the core at an angle. These inclined cuts weaken the bullet in their neighborhood and adapt it to mushroom on impact.

As shown in Fig. 3 of'the drawings, the

one-piece jacket is virtually divided into a tip, 2, and a body, 3, by a circumferential band of circular holes, 7, extending laterally through the metal of the jacket at a right angle to the axis of the bullet, and also extending into the core, 5, of the bullet. These holes, 7, weaken the bullet in their neighborhood and adapt it to mushroom. I do not limit myself to holes of any particular form so long as they are formed externally in the jacket and extend through the same and are left open and unoccupied. It will be particularly understood that the metal of the core is not exuded into any of these incisions in the jacket as is the case in that class of bullets where the jacket is cut in one way or another prior to the swaging of the bullet which forces the soft metal of the core into any cuts in the jacket.

I claim As a new article of manufacture, a fulljacketed, sharp-nosed, mushroom bullet cylindrical at its rear end and tapering forward thence to a sharp nose, the said bullet having a soft-metal core, and a one'piece jacket virtually divided circumferentially into a j acket-body and conical j acket-tip by means of a circumferential band of openings located in the point of the bullet and arranged at, or substantially at, a right angle to the longitudinal axis of the bullet, and formed in the acket so as to expose the core, which is not substantially cut and which is not exuded into the said openings, whereby the conical jacket-tip thus produced is weakened in its connection with the jacketbody, and adapted to be telescoped within the same upon the impact of the bullet.

In testimony whereof, I have signed this specification in the presence of two sub scribing witnesses.

THOMAS C. JOHNSON.

Witnesses:

HARVEY W. Gnonsnnox,

CLARA L. WEED.

Copies of this patentmay be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

